The 26-year-old has long been linked with a return to Europe, having previously thrived during a five-year stay in Italy with AC Milan.
Pato scored 63 goals in 150 games for the Rossoneri and was part of the squad that captured the Serie A title in 2011.
However, injuries began to take their toll on the forward who ultimately opted to a return to his homeland in 2013 with Corinthians.
A return of 17 goals in 62 games followed before Pato was on the move again, this time signing for Sao Paulo on loan.
It’s proved to be a match made in heaven, with the Brazilian rediscovering the form that convinced Milan to bring the South American star to Europe as a youngster.
In 94 outings for his current side, Pato has scored 37 goals and now could be lining up a return to Europe, and potentially even the Premier League.
According to UOL Esporte, West Ham are weighing up a move for the experienced striker in the January window.
Pato would no doubt welcome the chance to impress again on the European stage, though the Hammers may yet face competition for his signing from Tottenham Hotspur.
Spurs are in the market for a new striker following the release of Emmanuel Adebayor and have been linked with a move for the 26-year-old Brazil international this week.